<template>
    <input type="text" v-model="username" />
    {{ username }}
</template>

<script>
    import {ref} from 'vue'
    export default {
        setup(props,context)
        {
            console.log(props)

            console.log(context.attrs)

            console.log(context.slots)

            console.log(context.emit)

            console.log(context.expose)

            let username = ref('hello world')

            return {
                username
            }
        }
    }

</script>